itch.io

If you want to update the model once every two or three game steps without changing the animation speed, you can try this:

Create event:

updateModel = 0;
time_begin = current_time;

Step event:

if (updateModel == 0) {
    UltraModelUpdate(model, (current_time - time_begin) / 1000);
    time_begin = current_time;
}

updateModel += 1;
if (updateModel == 2) { // Change 2 to 3 to update every three steps
    updateModel = 0;
}

This passes the time elapsed since the previous update, so the animation should keep roughly the same playback speed while updating less often.